Cold-metal-sawing machine.



N0- 799,987. PATENTED SEPT. 19, 1905.

' G. A. JUENGST.

GOLD METAL SAWING MACHINE.

APPLICATION FILED MAR. 27. 1903.

uurrn STATES PATENT OFFICE.

CHARLES A. J UENGST, OF OROTON FALLS, NEW YORK, ASSIGNOR TO HIGLEYMACHINE COMPANY, OF OROTON CORPORATION OF NEW YORK.

FALLS, NEW YORK, A

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed March 2'7, 1903. Serial No. 149,868.

.To aZZ whom, it may concern.-

teeth of the saw with a constant supply of oil and to provide a yieldingmovement andseparation of the operative parts or factors under excesstension or strain.

In my improvement the bed of the machine is provided with an oil-tankinto which the sawblade dips, and the saw in its rotation is thusconstantly raising a film of oil on the teeth and adjacent surfaces tothe work, and the devices for feeding along the carriage and sawprogresssively have a yielding relation with a shaft driven by a primemover, so that the feeding devices slightly separate and are permittedto slip under the tension or strain created, where the saw, because ofthe hardness of the material,-cannot and does not cut as fast astheprogressive feed. The effect of this latter condition is to momentarilystop the feed without affecting the revolution of the saw. The saw canthus keep pace with the feed.

In the drawings, Figure 1 is a plan of the devices of my improvement.Fig. 2 is a side elevation of the same. Fig. 3 is a partial sideelevation and partial vertical central section at the right-hand end ofthe structure, Figs. 1 and 2. Fig. 4 is a cross-section at m w of Fig. 1through the bed of the machine, the oil-tank portion through thefeed-screw and arbor, and an elevation of the hub structure throughwhich this feed-screw passes; and Fig. 5 is a vertical section andpartial elevation through the bracket-bearing of the feedscrew arbor atthe right hand of the machine and showing a form of my invention.

The bed a of the machine and the carriage b are of metal of anywell-known or desired form, the carriage Z and bed a being provided withsuitable ways by which the carriage may move over the bed. The detailsof these parts form no essential part of my invention and have not beenshown. Upon the bed at the left-hand end of Figs. 1 and 2 is anadjustable clamp device 0, between which and the fixed Wall a of the bedthe work is placed and held. The clamp device is adapted to slide on thebed and is held by a screw moving in a slot (Z2 of the bed, the clampingaction being effected by the arm 0, attached to the upper end of thescrew. A hand-wheel c is provided on one end of a screw 0 for thepurpose of moving the clamp device a longitudinally of the bed a, of themachine. --The bed is provided with an oil-tank 6' along one side withoffset walls, Figs. 1 and 4, into which the saw 6 clips. It is onlynecessary that a small portion of the periphery of the saw dip into theoil, so as to raise a film of oil on the teeth and adjacent surfaces ofthe saw up to'the work, so as to lubricate the cutting-surfaces to keepthe parts cool and facilitate the work. On the carriage Z) there is astandard Cl, and an arbor d passes through the standard to supportthe'saw c. There are other standards ff on the carriage Z, and I provideguidearms g g ofcurved form in side elevation, Fig. 2, coming atopposite sides of the sawblade and closely adjacent to the surfaces orsides of the saw. The guide-arm g is securely fastened to the standardf, and it is provided with bolts 2, which pass across over the saw andserve to connect it to the guidearin g, and by these means the twoguide-arms are united and are supported by the guidearm g upon thestandard f.

A shaft Zz passes through the standardsff. On one end of this shaft is asprocket lb, the teeth of which engage perforations in the saw for thepurpose of driving the same. This driving device is, however, Well knownin the art. On the opposite end of the shaft it there is a bevel-wheelif. Projecting from the standard f is an arbor 3, on which is a sleeveMounted on this sleeve Z are fast and loose pulleys is is and a groovedfriction-wheel a; also, a bevel-pinion Z A yoke-bracket Z is at its endspivotally connected to the opposite sides of the carriage at one end bypivotscrews 4: 5. This yoke-bracket Z is provided with a centralbearing-sleeve Z for the feedscrew arbor m. This feed-screw arbor passesthrough the bearing-sleeve Z, through a depending arm 6 of the carriage6, through a slot in one end of the bed of the machine, and through arocker-hub or feed-nu t'jn. The

feed-screw arbor m is notthreaded where it passes through thebearing-sleeve Z and through the depending arm Z but said feedscrewarbor m is mainly supported by the said depending arm 6 and therocker-hub n in view of the fact that the bracket Z is pivotally mountedand would be capable of a movement except for the said arm 6 and hub n.This rocker-hub n is perforated, and the opposite ends of theperforation are provided with vertically-elongated tapering slots, theform being particularly shown in Fig. 4 in elevation and in Fig. 3 incross-section. The upper surface of the slot on one side and the lowersurface of the slot on the other side are provided with sectionalthreads adapted with the swinging of the rocker-sleeve to mesh with andconform to the screw-thread of the arbor m. In the position of theparts, Fig. 3, it is apparent that the feed-screw arbor on may be drawnfreely through the rocker-hub, because it is swung so that the sectionalscrew threads therein are out of engagement with the threads of thearbor. This rocker-hubn has bearings in the sides of the bed a of themachine, and it projects from one side of the bed, at which place it isprovided with an arm n and apin 7. The pin is movable in the free end ofthe arm and isadapted to pass into holes either in the bed a or in somead jacent fixed part provided therefor, and the function of the arm a isto turn the rockerhub 02 so as to bring the segment-threads of the saidrocker -.hub into mesh with the threads of the screw-arbor or out ofmesh at the pleasure of the operator, the function of the pin 7 beingtofix the desired position of the said rocker-hub. On the free and outerend of this feed-screw arbor on there is provided a bevel-gear 0, and inone side of the bracket there is fixed a short arbor 8, upon which ismounted a bevel-pinion 0, meshing with the bevel-wheel 0. Connected withthe bevel-pinion 0 is a friction-wheel 9', the periphery of whichpreferably conforms to the groove of the friction-wheel 2", thefrictionwheels 2" and 9 being in mesh.

The bearing-sleeve Z of the bracket Z is formed with a depending arm Zand I provide a screw-threaded rod .9 at one end passing through thelower end of the depending arm of the carriage and at its other endpassing into a recess in the arm Z of the bearing-sleeve. Around thisrod 8 at one end there is a nut s, and between the nut and the arm 6 ofthe carriage is a spring 8 In Fig. 3 the bearing-sleeve Z is shown withparallel sides and the bevel-gear 0 is preferably fixed to the end ofthe feed-screw arbor m,- but in the form of my invention shown in Fig. 5the feed-screw arbor m is provided with a swelled portion having acurved surface m and the bearing-sleeve Z instead of having parallelinner surfaces for this arbor is provided with slightly curved faces forthe swelled or curved portion m of the arbor. In this form of myinvention the bevel-gear 0 is loose upon the arbor, and I provide an arm9, having a hub fixed on the end of the arbor m. This arm 9 is providedwith a finger 10, passing through the end of the same and into a recessor aperture in the loose bevel-gear 0 By the construction in this formof my invention the fixed arm 9 and finger 1O compel the loosebevel-gear 0 to turn with it and the arbor m.

In the operation of the machine power is applied to the fast pulley 7;,from thence to the sleeve 2', grooved friction-wheel Z, bevelpinion Zfrom the bevel-pinion Z by the bevelwheel Z1 shaft 76, sprocket it tothe saw to rotate the same, from the grooved friction-wheel c" to thefriction-wheel '1" and bevelpinion 0, therefrom, to the bevel-wheel 0,feed screw arbor m, which acting in the rocker-hu b n in its rotationdraws the carriage Z) and parts connected therewith along and forces.the saw into and through the work. In this operation, and ashereinbefore stated, the saw-blade takes up from the oil-tank a film ofoil upon the teeth and adjacent surfaces thereof to the work to keep theparts cool and facilitate the cutting. The contact of the wheels 71' andr is that of friction only. Consequently the effect of the slightestseparation of the surfaces which are pressed into contact will be tostop the movement of the gear 0 and arbor m and arrest the forwardmovement of the feed. The function of the screw-threaded rod 8 asbetween the depending arm Z2 of the carriage and the arm Z of theswinging bracket is to keep the swinging bracket in as much of anelevated position as possible in view of the rigidity of the feedscrewarbor m. The swinging bracket Z, upon which the bevel-pinion 0 andfriction-wheel 0* are mounted,provides forayielding of thefriction-wheelr with reference to the grooved friction-wheel Z when it happens thatexcess tension or strain is created because of the hardness of thematerial through which the saw is passing retarding the progress of theout while the feed of the saw is moving at a maximum speed. Under theseconditions the retarding movement of the saw and its carriage and theeffort at a forward movement of the feed-screw arbor m causes a slightbend in the. parts by virtue of the inclined relation of the bracket Zto the arbor m, which has the effect under strain and tension ofslightly separating the periphery of the friction-wheel 7 from contactwith the groove of the friction-wheel i, consequently stopping even fora moment or more the feed of the screw-arbor m, but not in any respectaffecting or stopping the rotation of the saw by the parts providedtherefor. The saw thus has an opportunity to cut through the hardermaterial without being forced ahead by the feed, and time is provided inthis manner for cutting through the harder material before a necessaryforward movement is imparted to the feed devices. to a greateror lessextent, as according to the circumstances there may be an actual andapparent separation of the surfaces of the friction-wheels r and e" oronly suflicient of a separation for the one to slip with reference tothe other to produce the same effect for a shorter period.

I claim as my invention.

1. In a metal-sawing machine, the combination with a bed, a carriage anda saw, of devices supported by the carriage, movable therewith andactuated by a prime mover for revolving the saw, other devices supportedby the carriage and bed respectively for progressively feeding along thesaw, and intermediate devices also supported by the carriage and capableof a slight yielding movement which normally communicate the power ofthe prime mover to the feeding devices, but which yield under excessivetension and strain to check the feed.

2. In a metal-sawing machine, the combination with a bed, a carriage,and a saw, of devices supported by the carriage, movable therewith andactuated by a prime mover for revolving the saw, other devices supportedby the carriage and bed respectively for progressively feeding along thesaw, intermediate devices also supported by the carriage and capable ofa slight yielding movement which normally communicate the power of theprime mover to the feeding devices, but which yield under'excess tensionand strain to check the feed, and regulatable spring devices fornormally maintaining said intermediate devices in an initial relation ofcontact.

3. In a metal-sawing machine, the combination with a bed, a carriage anda saw, of driving devices supported by the carriage, movable therewith,and actuated by a primemover for revolving the saw, a feed-screw arbor,an arm depending from the carriage,

a socket-hub actuated manually for engaging and disengaging the feedscrew arbor, a bracket pivotally connected to said carriage, a bearingin said bracket for said feed-screw arbor, gears and a friction-wheelcarried by said bracket, and a friction wheel on the power-shaft-andwith which the said frictionwheel engages.

4. In a metal-sawing machine, the combination with a bed, a carriage anda saw, of devices supported by the carriage, movable therewith andactuated by a prime mover for revolving the saw. a feed-screw arbor, adepending arm of the carriage through which the same passes and by whichit is partially supported, a feed-nut in the bed of the machine, abearing-sleeve for the said arbor near its end, an inclinedbracket-support extending from the bearing and pivotally connected tothe carriage so that the line of the bracket is at an acute angle to theline of the arbor, and gearand friction wheel devices extending re- Thismovement is effectedspectively from the power-shaft to the said arborfor communicating the power of the prime mover to the feeding devicesand at the same time providing for a yielding movement under excessivetension and strain.

5. In a metal-sawing machine, the combination with a bed, a carriage,and a saw, of devices supported by the carriage movable therewith andactuated by a prime mover for revolving the saw, a feed-screw arbor, adepending arm of the carriage through which the same passes and by whichit is partially supported, a feed-nut in the bed of the machine, abearing-sleeve for the said arbor near its end, an inclinedbracket-support extending from the bearing and pivotally connected tothe carriage so thatthe line of the bracket is at an acute angle to theline of the arbor, an arbor secured to the said swinging bracket, abevel-pinion and a friction-wheel mounted on said arbor, a bevel-gear onthe shaft of the feed-screw arbor meshing with said bevel-pinion, and afriction-wheel on the power shaft or device meshing with the aforesaidfrictionwheel for communicating the power of the prime mover to thefeeding devices.

6. In a metal-sawing machine, the combination with a bed, a carriage anda saw, of devices supported by the carriage, movable therewith andactuated by a prime mover for revolving the saw, a feed-screw arbor, adepending arm of the carriage through which the same passes and by whichit is partially supported, a feed-nut in the bed of the machine, abearing-sleevefor the said arbor near its end, an inclinedbracket-support extending from the bearing and pivotally connected tothe carriage, so that the line of the bracket is at an acute angle tothe line of the arbor, a depending arm for the sleeve of-the bracket, ascrew-rod bearing against this arm at one end and at the other endpassing through the depending arm of the carriage, a nut on saidscrew-rod and a helical spring surrounding the screw-rod between the nutand the lower end of the arm of the carriage for applying supportingtension to the parts so as to insure the contact of the friction-wheelwhich communicates the power of the prime mover to the feeding devices.

7. In a metal-sawing machine, the combination with a bed, a carriage, asaw, and devices for revolving the saw, of a depending arm of thecarriage, a sleeve, a depending arm of the sleeve, and a bracket of yokeform connected to the sleeve and the free ends of which are pivotallyconnected to the carriage, the bracket and its sleeve being adapted toswing, a feed-sc rew arbor passing through said sleeve and through thedepending arm of the carriage, a feed-nut through which said feedscrewarbor passes and by which it is engaged and disengaged manually,adjustable spring function devices located between the depending arm ofthe sleeve and the depending arm &

of the carriage, the office of which is to hold up the said sleeve andbracket to a regulatable extent, and means for imparting a rotarymovement to the said feed-screw arbor.

8. In a metal-sawing machine, the combination with a bed, a carriage, asaw, and devices for revolving the saw, of a dependingarm of thecarriage, a sleeve, a depending arm of the sleeve and a bracket of yokeform connected to the sleeve, and the free ends of which arepit-'otallyconnected to the carriage, the bracket and its sleeve beingadapted to swing, a feedscrew arbor passing through said sleeve andthrough the depending arm of the carriage, a feed-nut through which saidfeed-screw arbor passes and by which it is engaged and disengagedmanually, a screw-tln'eaded rod 8 at one end bearing in a recess of thedepending arm of the sleeve and at the other end passing through anaperture in the depending arm of the carriage, a nut on said screw-rod,and a helical spring surrounding the same between the nut and thedepending arm of the carriage, a bevel-gear secured to the said arboroutside of the said sleeve, a bevel -pinion meshing therewith, afriction-wheel connected to the bevel-pinion and a second friction-wheelengaging the aforesaid friction-wheel, the latter secured to thepower-shaft, substantially as set forth.

9. In a metal-sawing machine, the combination with a bed, a carriage anda saw, of standards upon the carriage,a shaft passing through the same,a sprocket on one end of the shaft, the teeth of which engage aperturesin the saw, a bevel-wheel on the other end of said shaft, an arborsecured to one of said standards and extending out therefrom at rightangles to the bed and carriage an d at an obtuse angle to the aforesaidshaft, a sleeve surrounding said arbor, fast and loose pulleys upon saidsleeve, a friction-wheel and a bevel-pinion also upon said shaft, thebevel-pinion meshing with the aforesaid bevel-wheel, said devicesserving for revolving the saw, and means substantially as herein shownand described and also supported by the carriage and actuated by thefriction-wheel upon said sleeve for progressively feeding along the saidcarriage and saw, substantially as set forth.

10. In a metal-sawing machine, the combination with a bed, a carriageand a saw, of standards upon the carriage, a shaft passing bedrespectively for progressively feeding along the carriage and the saw,and intermediate devices extending between the latter devices and thefriction-wheel on said sleeve for communicating the power of the primemover to the feedingdevices, but which yield under excess tension andstrain to check the feed.

11. In a metal sawing machine, the combination with a bed, a carriageand a saw, of standards upon the carriage, a shaft passing through thesame, a sprocket on one end of the shaft, the teeth of which engageapertures in the saw, a bevel-Wheel on the other end of said shaft, anarbor secured to one of said standards and extending out therefrom atright angles to the bed and carriage and at an obtuse angle to theaforesaid shaft, a sleeve surrounding said arbor fast and loose pulleysupon said sleeve, a friction-Wheel andabevelpinion also upon said shaft,the bevel-pinion meshing with the aforesaid bevel-wheel, said devicesserving for revolving the saw, devices supported by the carriage and bedrespectively for progressively feeding along the carriage and the saw,and intermediate devices extending between the latter devices and thefriction-wheel on said sleeve for communicating the power of the primemover to the feeding devices but which yield under excess ten sion andstrain to check the feed, and regulatable spring devices for normallymaintaining the intermediate devices in an initial relation offrictional contact.

Signed at Oroton Falls, in the county of \Vestchester and State of NewYork, this 24th day of March, A. D. 1903.

CHARLES A. J UENGST.

"itnesses:

E. T. THOMAS, E. LUFF.

